1005656000605 has 8 divisors (see below), whose sum is σ = 1218735589464. Its totient is φ = 796559208000.

The previous prime is 1005656000599. The next prime is 1005656000659. The reversal of 1005656000605 is 5060006565001.

It can be written as a sum of positive squares in 4 ways, for example, as 717143066649 + 288512933956 = 846843^2 + 537134^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1005656000605 is a prime.

It is a super-2 number, since 2×1005656000605² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 995698506 + ... + 995699515.

It is an arithmetic number, because the mean of its divisors is an integer number (152341948683).

Almost surely, 2^{1005656000605} is an apocalyptic number.

It is an amenable number.

1005656000605 is a deficient number, since it is larger than the sum of its proper divisors (213079588859).

1005656000605 is a wasteful number, since it uses less digits than its factorization.

1005656000605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991398127.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 1005656000605 in words is "one trillion, five billion, six hundred fifty-six million, six hundred five", and thus it is an aban number.